CN108649314B - Double-layer shear type parabolic cylinder expandable truss antenna device - Google Patents
Double-layer shear type parabolic cylinder expandable truss antenna device Download PDFInfo
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- CN108649314B CN108649314B CN201810446344.3A CN201810446344A CN108649314B CN 108649314 B CN108649314 B CN 108649314B CN 201810446344 A CN201810446344 A CN 201810446344A CN 108649314 B CN108649314 B CN 108649314B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
Abstract
The invention belongs to the technical field of antenna parts or devices combined with antennas, and discloses a novel double-layer shear type parabolic cylinder expandable truss antenna device which is composed of a plurality of double-layer shear type hinge mechanisms; the adjacent double-layer shear type hinge mechanisms are connected with each other through a double-head hinge, a sliding hinge, a three-head hinge and a four-head hinge to form a closed parabolic cylinder; each double-layer shear type hinge mechanism consists of two vertical rods, two long inclined rods, two short inclined rods, four double-head hinges, four sliding hinges and two springs; two adjacent double-layer shear type hinge mechanisms share one vertical rod, one double-head hinge or three-head hinge or four-head hinge, one sliding hinge and one spring. The invention has the advantages of higher geometric stability, strong rigidity, simple movement mechanism and control system, small volume after being furled, high storage rate, strong module expansibility and simple assembly parts, and can be respectively unfolded in the axial direction or the length direction; the use requirement of the space large-caliber antenna is met.
Description
Technical Field
The invention belongs to the technical field of antenna parts or devices combined with antennas, and particularly relates to a double-layer shear type parabolic cylinder expandable truss antenna device.
Background
Currently, the current state of the art commonly used in the industry is such that: with the rapid development and continuous deepening of space science and technology, space engineering and various universe exploration activities, the requirements on high geometric stability, large scale and light weight of a space structure become more and more urgent. However, since the space of the space vehicle is limited, the formed large-scale space structure cannot be directly sent to the track, and therefore a space deployable antenna device with a large folding-unfolding ratio needs to be designed, and the deployable antenna device is fixed in a payload compartment of the vehicle in a folded state in a ground launching stage; after the antenna device is launched into the orbit, the deployable antenna device is controlled by the ground to be deployed and is finally locked in a working state, and a space research task is carried out by utilizing the space deployable antenna device to replace a formed large-scale space structure, so that an effective way for solving the problems is provided. The design of space-deployable devices and related research efforts are one of the key issues in the development of aerospace industry. Currently, space-expandable devices have evolved toward modularity, multiple degrees of freedom, and complexity. The large-scale deployable antenna device is a key technology in satellite development work, tasks such as electronic reconnaissance, ground navigation, data relay and the like put forward high-gain requirements on a satellite-borne antenna, the conventional satellite-borne deployable antenna mostly adopts a hinged truss type deployable mechanism, and the parabolic cylinder type deployable truss antenna mechanism is widely applied, but the rigidity of the antenna is seriously reduced along with the increase of the aperture of the antenna. In addition, the existing deployable antenna device mostly adopts a motor as a power source to drive the rope to draw the whole deployment of the mechanism, although the motor drive has remarkable excellent effects on speed control and impact vibration in the deployment process, the self weight of the motor and the tensioning zipper are complex and difficult to control, the reliability of the whole structure is also reduced, the winding phenomenon is very easy to occur in the deployment process, the truss antenna is failed to deploy, the space research task is not performed, and great economic loss is brought.
In summary, the problems of the prior art are as follows: the existing deployable antenna device has a complex driving mechanism, the weight of the mechanism is increased, the working stability of the mechanism is reduced, and higher requirements are provided for carrying; the antenna can not be normally unfolded easily, so that the space research task can not be carried out, and huge economic loss is brought.
The difficulty and significance for solving the technical problems are as follows: along with the increase of the aperture of the antenna, the rigidity of the antenna is seriously reduced, the longer the rope is, the more complex the driving mechanism is, and the greater the difficulty of reliable unfolding is, which is required by realizing the stable and reliable unfolding of the truss system by means of the motor driving. Therefore, in the research process of the deployable antenna, it is of great practical significance to provide a deployable mechanism with excellent performance, such as good manufacturing process, high rigidity, large folding ratio, no need of an additional driving device and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a double-layer shear type parabolic cylinder expandable truss antenna device.
The invention is realized in such a way that the double-layer shear type parabolic cylinder expandable truss antenna device comprises n sets of expandable components A which are expanded into a sector ring shape in the axial direction, wherein n is more than or equal to 2; m sets of expandable components B which are expanded into a rectangle in the length direction, wherein m is more than or equal to 2;
the expandable component A is in a fan-ring shape after being expanded, the upper end point and the lower end point of the vertical rod are both positioned on the circular arc, and the vertical rod points to the circle center and is connected with the circle center through the upper shear type mechanism and the lower shear type mechanism which correspond to the vertical rod;
the expandable component B is rectangular after being expanded, and the vertical rods are straight rods which are parallel to each other and are connected with each other through an upper shear-type mechanism and a lower shear-type mechanism which correspond to the vertical rods; the deployable component A in the axial direction and the deployable component B in the length direction are connected with each other through a vertical hinge, a three-head hinge and a four-head hinge to form a parabolic cylinder deployable antenna device mechanism.
Further, the double-layer scissor-type parabolic expandable truss antenna device comprises a plurality of double-layer scissor hinge mechanism units; one double-layer shear type hinge mechanism unit comprises a first vertical rod, a second vertical rod, an upper-layer shear type mechanism and a lower-layer shear type mechanism, wherein the upper-layer shear type mechanism and the lower-layer shear type mechanism are connected with the first vertical rod and the second vertical rod; the first vertical rod and the upper layer shear type mechanism are connected with each other through a first double-head hinge and a first sliding hinge, and the first vertical rod and the lower layer shear type mechanism are connected with each other through a second sliding hinge and a second double-head hinge; the second vertical rod and the upper layer shear mechanism are connected with each other through a third double-head hinge and a third sliding hinge, and the second vertical rod and the lower layer shear mechanism are connected with each other through a fourth sliding hinge and a fourth double-head hinge; the upper end of the first vertical rod is connected with the lower end of the first double-head hinge and is connected with the second double-head hinge, the upper end of the second vertical rod is connected with the third double-head hinge, the lower end of the second vertical rod is connected with the fourth double-head hinge, the first sliding hinge is arranged above the second sliding hinge, the first spring is arranged between the first sliding hinge and the second sliding hinge, the third sliding hinge is arranged above the fourth sliding hinge, and the second spring is arranged between the third sliding hinge and the fourth sliding hinge.
Further, the upper scissors mechanism comprises a first short inclined rod, a second short inclined rod and a first hinged shaft, the left end face of the first short inclined rod is connected with the first double-end hinge, the right end face of the first short inclined rod is connected with the third sliding hinge, the left end face of the second short inclined rod is connected with the first sliding hinge, the right end face of the second short inclined rod is connected with the third double-end hinge, and the first short inclined rod and the second short inclined rod are rotated with each other through the first hinged shaft.
Further, the lower-layer scissor mechanism comprises a first long inclined rod, a second long inclined rod and a second hinged shaft; the left end face of the first long inclined rod is connected with the second sliding hinge, the right end face of the first long inclined rod is connected with the fourth double-end hinge, the left end face of the second long inclined rod is connected with the second double-end hinge, the right end face of the second long inclined rod is connected with the fourth sliding hinge, and mutual rotation is achieved between the first long inclined rod and the second long inclined rod through the second hinge shaft.
Furthermore, the first vertical rod and the first double-head hinge are connected through a fixing pair between the second double-head hinge and the fourth double-head hinge.
Furthermore, the first vertical rod, the first sliding hinge and the second sliding hinge are connected through a sliding pair, and the second vertical rod, the third sliding hinge and the fourth sliding hinge are connected through a sliding pair.
Furthermore, the first short diagonal rod is connected with the first double-head hinge and the third sliding hinge through a revolute pair, and the second short diagonal rod is connected with the first sliding hinge and the third double-head hinge through a revolute pair.
Furthermore, the first long diagonal rod is connected with the second sliding hinge and the fourth double-head hinge through a revolute pair.
Further, the first hinge shaft comprises a first mounting part, a second mounting part and a hinge rod, the first mounting part is formed by hollowing the middle of the first short diagonal rod, the second mounting part is formed by hollowing the middle of the second short diagonal rod, the hollowed positions are the sliding distances of the hinge rod from the folded position to the completely unfolded position of the double-layer hinge unit, the first mounting part and the second mounting part are mutually crossed and rotate mutually around the hinge rod, and the surface of the hinge rod is tangent to the first mounting part and the second mounting part; the second articulated shaft is consistent with the first articulated shaft in rotation mode.
Another objective of the present invention is to provide a method for unfolding a parabolic cylinder type expandable truss antenna structure, where the method for unfolding the parabolic cylinder type expandable truss antenna structure is formed by a plurality of double-layer scissor-type hinge mechanisms, and the parabolic cylinder type expandable truss antenna structure is driven by a first spring and a second spring elastically, so as to push a first sliding hinge, a second sliding hinge, a third sliding hinge, and a fourth sliding hinge to slide towards two ends of a vertical rod, and further pull a first short diagonal rod, a second short diagonal rod, a first long diagonal rod, and a second long diagonal rod to rotate around a first hinge shaft and a second hinge shaft, so as to unfold a pushing mechanism.
In summary, the advantages and positive effects of the invention are: the invention has simple structure, no complex control system, higher geometric stability, strong rigidity and simple motion mechanism and control system, can meet the use requirement of a space large-caliber antenna, and is suitable for communication satellites, space detection and the like.
The truss body unit realizes power driving by means of the elastic potential energy of the compression spring, does not need an active driving device, and relatively reduces the whole weight of the mechanism.
The invention can realize the unfolding and folding of the whole mechanism through the unfolding and folding of the scissor mechanism, can unfold and fold from the axial direction or the length direction, can form an effective parabolic cylinder after the device is unfolded, occupies a smaller space after the device is folded, and obviously reduces the storage volume.
The invention adopts the modular design idea, the number of modules can be expanded according to the caliber size of the antenna, the expansibility of the modules is strong, and the assembly parts are simple.
Drawings
Fig. 1 is a schematic diagram of a fully-unfolded three-dimensional structure of a double-layer scissor-type parabolic cylinder expandable truss antenna device according to an embodiment of the present invention.
Fig. 2 is an expanded schematic view of a double-layer scissor-type parabolic cylinder expandable truss antenna device according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating the expandable truss antenna apparatus with a double-layer scissor-type parabolic cylinder according to an embodiment of the present invention.
Fig. 4 is a fully-folded perspective view of a dual-layer scissor-type parabolic expandable truss antenna apparatus according to an embodiment of the present invention.
Fig. 5 is a schematic perspective view of the expansion of the double-shear hinge unit in the axial direction of the double-layer shear parabolic cylinder expandable truss antenna device according to the embodiment of the present invention.
Fig. 6 is a schematic perspective view illustrating the expansion of a double-shear hinge unit in the length direction of a double-layer shear parabolic cylinder expandable truss antenna apparatus according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of a first scissor mechanism provided by an embodiment of the invention.
FIG. 8 is a schematic diagram of a third scissor mechanism provided by an embodiment of the invention.
Fig. 9 is a schematic drawing showing a double scissor hinge unit according to an embodiment of the present invention in a closed perspective.
Fig. 10 is a perspective view of a dual-head hinge according to an embodiment of the present invention.
Fig. 11 is a perspective view of a sliding hinge according to an embodiment of the present invention.
Fig. 12 is a perspective view of a triple-head hinge according to an embodiment of the present invention.
Fig. 13 is a perspective view of a four-head hinge according to an embodiment of the present invention.
Fig. 14 is a perspective view of a vertical hinge provided by an embodiment of the present invention.
Fig. 15 is a perspective view illustrating a hinge shaft according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention aims to solve the problems that the driving mechanism of the existing deployable antenna device is complex, the weight of the mechanism is increased to some extent, the working stability of the mechanism is reduced, and higher requirements are put forward on carrying; the double-layer shear type parabolic cylinder expandable truss antenna device is in a furled state during emission, can be expanded through the spring drive after being in orbit, is locked to a working state, and has the characteristics of high rigidity, large folding-unfolding ratio and the like.
As shown in fig. 1, 2, 3, 4, 12, 13, and 14, an embodiment of the present invention provides a double-layer scissor-type parabolic expandable truss antenna apparatus, including: n sets of expandable components A which are expanded into a fan-shaped ring in the axial direction, wherein n is more than or equal to 2; m sets of expandable components B which are expanded into a rectangle in the length direction, wherein m is more than or equal to 2; the expandable component A is in a fan-ring shape after being expanded, the upper end point and the lower end point of the vertical rod are both positioned on the circular arc, and the vertical rod points to the circle center and is connected with the circle center through the upper shear type mechanism and the lower shear type mechanism which correspond to the vertical rod. The expandable component B is rectangular after being expanded, and the vertical rods are straight rods which are parallel to each other and are connected with each other through an upper shearing mechanism and a lower shearing mechanism which correspond to the vertical rods. The deployable assemblies A in the axial direction and the deployable assemblies B in the length direction are connected with each other through vertical hinges, three-head hinges and four-head hinges to form a parabolic cylinder deployable mechanism.
As shown in fig. 5, 6, 8, 9, 10 and 11, a double-layer scissor type hinge unit includes two vertical rods, namely a first vertical rod 1 and a second vertical rod 2, and an upper layer scissor mechanism 3 and a lower layer scissor mechanism 4 which are connected with the first vertical rod 1 and the second vertical rod 2. The first vertical rod 1 and the upper layer scissor mechanism 3 are connected with each other through a first double-head hinge 5 and a first sliding hinge 6, and the first vertical rod 1 and the lower layer scissor mechanism 4 are connected with each other through a second sliding hinge 7 and a second double-head hinge 8. The second vertical rod (2) is connected with the upper layer scissor mechanism (3) through a third double-head hinge (9) and a third sliding hinge (10), and the second vertical rod (2) is connected with the lower layer scissor mechanism through a fourth sliding hinge (11) and a fourth double-head hinge (12). The upper end of the first vertical rod 1 is connected with the lower end of the first double-head hinge 5 and is connected with the second double-head hinge 8, the upper end of the second vertical rod 2 is connected with the third double-head hinge 9, and the lower end of the second vertical rod is connected with the fourth double-head hinge 12. The first sliding hinge 6 is arranged above the second sliding hinge 7, the first spring 13 is arranged between the first sliding hinge 6 and the second sliding hinge 7, the third sliding hinge 10 is arranged above the fourth sliding hinge 11, the second spring 14 is arranged between the third sliding hinge 10 and the fourth sliding hinge 11, and the double-layer scissor type parabolic cylinder expandable truss antenna device is folded or unfolded into a parabolic cylinder antenna device under the action of the first spring 13 and the second spring 14. Two adjacent double-layer shear type hinge mechanisms of the double-layer shear type parabolic cylinder expandable truss device share one vertical rod, two double-head hinges or three-head hinges or four-head hinges, two sliding hinges and one spring.
As shown in fig. 7, the upper scissor mechanism 3 includes a first short diagonal 15, a second short diagonal 16, and a first hinge shaft 17, a left end surface of the first short diagonal 15 is connected to the first double-headed hinge 5, a right end surface of the first short diagonal is connected to the third sliding hinge 10, a left end surface of the second short diagonal 16 is connected to the first sliding hinge 6, a right end surface of the second short diagonal is connected to the third double-headed hinge 9, and a mutual rotation is achieved between the first short diagonal 15 and the second short diagonal 16 through the first hinge shaft 17.
As shown in fig. 8, the lower scissors mechanism 4 includes a first long diagonal bar 18, a second long diagonal bar 19, and a second hinge shaft 20, the left end surface of the first long diagonal bar 18 is connected to the second sliding hinge 7, the right end surface thereof is connected to the fourth double-headed hinge 12, the left end surface of the second long diagonal bar 19 is connected to the second double-headed hinge 8, the right end surface thereof is connected to the fourth sliding hinge 11, and the first long diagonal bar 18 and the second long diagonal bar 19 are rotated with each other through the second hinge shaft 20.
Between first montant 1 and first double-end hinge 5, the second double-end hinge 8, all through fixed pair connection between second montant 2 and third double-end hinge 9, the fourth double-end hinge 12.
The first vertical rod 1, the first sliding hinge 6 and the second sliding hinge 7 are connected through a sliding pair, and the second vertical rod 2, the third sliding hinge 10 and the fourth sliding hinge 11 are connected through a sliding pair.
The first short diagonal rod 15 is connected with the first double-head hinge 5 and the third sliding hinge 10, and the second short diagonal rod 16 is connected with the first sliding hinge 6 and the third double-head hinge 9 through revolute pairs.
The first long diagonal rod 18 is connected with the second sliding hinge 7 and the fourth double-head hinge 12 through a revolute pair, and the second long diagonal rod 19 is connected with the second double-head hinge 8 and the fourth sliding hinge 11 through a revolute pair.
As shown in fig. 15, the first hinge shaft 17 includes a first mounting member 21, a second mounting member 22 and a hinge rod 23, the first mounting member 21 is formed by hollowing out the middle of the short diagonal rod 15, the second mounting member 22 is formed by hollowing out the middle of the short diagonal rod 16, the hollowing out position is a sliding distance of the hinge rod 23 from the folded position to the fully unfolded position of the double-layer hinge unit, and the first mounting member 21 and the second mounting member 22 are disposed to intersect each other and rotate with each other around the hinge rod 23. The second hinge shaft 20 rotates in the same manner as the first hinge shaft 17.
The parabolic cylinder expandable truss antenna structure formed by the double-layer scissor type hinge mechanism pushes the first sliding hinge 6, the second sliding hinge 7, the third sliding hinge 10 and the fourth sliding hinge 11 to slide towards the two ends of the vertical rod under the elastic driving of the first spring 13 and the second spring 14, and then pulls the first short diagonal rod 15, the second short diagonal rod 16, the first long diagonal rod 18 and the second long diagonal rod 19 to rotate around the first hinge shaft 17 and the second hinge shaft 20, so that the pushing mechanism is expanded.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The double-layer shear type parabolic cylinder expandable truss antenna device is characterized by comprising n sets of expandable components A which are expanded into a sector ring shape in the axial direction, wherein n is more than or equal to 2; m sets of expandable components B which are expanded into a rectangle in the length direction, wherein m is more than or equal to 2;
the expandable component A is in a fan-ring shape after being expanded, the upper end point and the lower end point of the vertical rod are both positioned on the circular arc, and the vertical rod points to the circle center and is connected with the circle center through the upper shear type mechanism and the lower shear type mechanism which correspond to the vertical rod;
the expandable component B is rectangular after being expanded, and the vertical rods are straight rods which are parallel to each other and are connected with each other through an upper shear-type mechanism and a lower shear-type mechanism which correspond to the vertical rods; the deployable component A in the axial direction and the deployable component B in the length direction are mutually connected through a vertical hinge, a three-head hinge and a four-head hinge to form a parabolic cylinder deployable antenna device mechanism;
the double-layer shear type parabolic cylinder expandable truss antenna device comprises a plurality of double-layer shear type hinge mechanism units; one double-layer shear type hinge mechanism unit comprises a first vertical rod, a second vertical rod, an upper-layer shear type mechanism and a lower-layer shear type mechanism, wherein the upper-layer shear type mechanism and the lower-layer shear type mechanism are connected with the first vertical rod and the second vertical rod; the first vertical rod and the upper layer shear type mechanism are connected with each other through a first double-head hinge and a first sliding hinge, and the first vertical rod and the lower layer shear type mechanism are connected with each other through a second sliding hinge and a second double-head hinge; the second vertical rod and the upper layer shear mechanism are connected with each other through a third double-head hinge and a third sliding hinge, and the second vertical rod and the lower layer shear mechanism are connected with each other through a fourth sliding hinge and a fourth double-head hinge; the upper end of the first vertical rod is connected with the lower end of the first double-head hinge and is connected with the second double-head hinge, the upper end of the second vertical rod is connected with the third double-head hinge, the lower end of the second vertical rod is connected with the fourth double-head hinge, the first sliding hinge is arranged above the second sliding hinge, the first spring is arranged between the first sliding hinge and the second sliding hinge, the third sliding hinge is arranged above the fourth sliding hinge, and the second spring is arranged between the third sliding hinge and the fourth sliding hinge.
2. The dual-layer scissor parabolic cylinder deployable truss antenna apparatus of claim 1, wherein the upper layer scissor mechanism comprises a first short diagonal, a second short diagonal, and a first hinge shaft, wherein a left end surface of the first short diagonal is connected to the first double-headed hinge, a right end surface of the first short diagonal is connected to the third sliding hinge, a left end surface of the second short diagonal is connected to the first sliding hinge, a right end surface of the second short diagonal is connected to the third double-headed hinge, and the first short diagonal and the second short diagonal are rotated with respect to each other via the first hinge shaft.
3. The dual-layer scissor parabolic expandable truss antenna apparatus of claim 1, wherein the lower layer scissor mechanism comprises a first long diagonal, a second hinged axis; the left end face of the first long inclined rod is connected with the second sliding hinge, the right end face of the first long inclined rod is connected with the fourth double-end hinge, the left end face of the second long inclined rod is connected with the second double-end hinge, the right end face of the second long inclined rod is connected with the fourth sliding hinge, and mutual rotation is achieved between the first long inclined rod and the second long inclined rod through the second hinge shaft.
4. The dual scissor parabolic expandable truss antenna apparatus of claim 1, wherein the first vertical rod and the first double-ended hinge are connected by a fixed pair between the second double-ended hinge and the second vertical rod and the third double-ended hinge and the fourth double-ended hinge.
5. The dual-layer scissor parabolic cylinder deployable truss antenna apparatus of claim 1, wherein the first vertical rod is connected to the first sliding hinge and the second sliding hinge, and the second vertical rod is connected to the third sliding hinge and the fourth sliding hinge via a sliding pair.
6. The dual-layer scissor parabolic cylinder deployable truss antenna apparatus of claim 2, wherein the first short diagonal is connected to the first double-ended hinge and the third sliding hinge, and the second short diagonal is connected to the first sliding hinge and the third double-ended hinge via a revolute pair.
7. The dual-layer scissor parabolic cylinder deployable truss antenna apparatus of claim 3, wherein the first long diagonal bar is connected to the second sliding hinge and the fourth double-headed hinge via a revolute pair.
8. The dual-layer scissor-parabolic expandable truss antenna assembly of claim 2, wherein the first hinge axis comprises a first mounting member, a second mounting member and a hinge rod, wherein the first mounting member is formed by a hollow in the middle of the first short diagonal rod, the second mounting member is formed by a hollow in the middle of the second short diagonal rod, the hollow is located at a distance that the hinge rod slides when the dual-layer hinge unit is folded from a fully expanded position, the two mounting members are intersected with each other and rotate around the hinge rod, and the surface of the hinge rod is tangent to the second mounting member; the second articulated shaft is consistent with the rotation mode of the first articulated shaft.
9. The unfolding method of the double-layer scissor-type parabolic cylinder deployable truss antenna device according to claim 1, wherein the unfolding method comprises the step of pushing the first sliding hinge, the second sliding hinge, the third sliding hinge and the fourth sliding hinge to slide towards the two ends of the vertical rod under the elastic driving of the first spring and the second spring, and further pulling the first short diagonal rod, the second short diagonal rod, the first long diagonal rod and the second long diagonal rod to rotate around the first hinge shaft and the second hinge shaft, so that the pushing mechanism unfolds.
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| CN109860974B (en) * | 2019-01-18 | 2023-10-03 | 燕山大学 | Composite shear hinge type perimeter truss expandable antenna mechanism |
| CN111129695B (en) * | 2019-12-10 | 2021-01-08 | 西安电子科技大学 | Movable joint based central rod device of framework type expansion antenna |
| CN111092288B (en) * | 2020-01-09 | 2021-04-20 | 天津大学 | Single-degree-of-freedom parabolic cylinder deployable surface antenna |
| CN111397651A (en) * | 2020-03-27 | 2020-07-10 | 深圳市道通科技股份有限公司 | Calibration support |
| CN112736403B (en) * | 2020-12-22 | 2023-01-03 | 上海卫星工程研究所 | Deployable double-layer hybrid spatial planar antenna |
| CN114962438B (en) * | 2022-04-24 | 2023-04-07 | 北京理工大学 | Flexible deployable mechanism based on paper folding principle and soft hinge |
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